I'm not an expert. But they sound like slightly different things to me. The first sounds like maybe some kind of keyboard/organ synth work. Sounds like it has two parts "layering". The first time I listened I thought it something like an accordion maybe in reverse.

Lewis could be right about a Theremin, or something mimicking one. Certainly for the second one.

I'd say the first sounds like an accordion or two, but recorded or effects added to make it sound slightly distant or outside, some reverb effect or something.

The second sounds like a monophonic synth, (my keyboards have many similar sounds to this) with 'portamento' set which means when you play different notes the synth 'slides' between them - you can set how quickly this happens, as well as vibrato and other modulation.

EDIT: used the wrong word for 'portamento'

Last edited by Lime on Sat Dec 10, 2016 3:10 am, edited 2 times in total.